This paper examines the understanding of business concentration through the Herfindahl-Hirschman Index (HHI), by showing that this index is conceptually a model according to which this concentration is the consequence of a renewal process. This process is prompted by firms engaging in different...

"This paper examines the social cost of the pharmaceutical industry in South Africa. From a regulatory perspective the industry is seen to exhibit monopoly-like behaviour resulting in monopoly prices on the supply (manufacturing) side and diminished consumption on the demand (consumer) side. The...